diff --git a/qb/playground.ts b/qb/playground.ts
index fe6a0d922..06ca07352 100644
--- a/qb/playground.ts
+++ b/qb/playground.ts
@@ -1,7 +1,8 @@
 // tslint:disable:no-console
 import {setupTests} from "./test/setupTeardown";
-import e, {Genre} from "./dbschema/edgeql-js";
+import e from "./dbschema/edgeql-js";
 import {createClient, Duration, IsolationLevel} from "edgedb";
+import type {typeutil} from "edgedb/dist/reflection";
 
 async function run() {
   await setupTests();
@@ -30,10 +31,7 @@ async function run() {
       readonly: false,
     });
 
-  const query = e.select(e.Movie, m => ({
-    release_year: true,
-    filter: e.op(m.title, "=", "The Avengers"),
-  }));
+  const query = e.datetime(new Date());
 
   console.log(query.toEdgeQL());
   const result = await query.run(client);
diff --git a/qb/test/collections.test.ts b/qb/test/collections.test.ts
index ff47c07f5..e9846b6e8 100644
--- a/qb/test/collections.test.ts
+++ b/qb/test/collections.test.ts
@@ -1,6 +1,6 @@
 import {Client, $} from "edgedb";
-import e, {$infer} from "../dbschema/edgeql-js";
-import type {$VersionStageλEnum} from "../dbschema/edgeql-js/modules/sys";
+import e, {$infer, sys} from "../dbschema/edgeql-js";
+// import type {$VersionStageλEnum} from "../dbschema/edgeql-js/modules/sys";
 import {tc} from "./setupTeardown";
 
 import {setupTests, teardownTests, TestData} from "./setupTeardown";
@@ -390,12 +390,12 @@ test("non literal tuples", async () => {
         ver: {
           major: number;
           minor: number;
-          stage: `${$VersionStageλEnum}`;
+          stage: `${sys.VersionStage}`;
           stage_no: number;
           local: string[];
         };
         verMajor: number;
-        verStage: `${$VersionStageλEnum}`;
+        verStage: `${sys.VersionStage}`;
         verLocal: string[];
         verLocal0: string;
       }
diff --git a/src/reflection/generators/generateScalars.ts b/src/reflection/generators/generateScalars.ts
index 5577a83ed..3b6b42824 100644
--- a/src/reflection/generators/generateScalars.ts
+++ b/src/reflection/generators/generateScalars.ts
@@ -8,7 +8,7 @@ import {
   toTSScalarType,
   scalarToLiteralMapping,
 } from "../util/genutil";
-import {dts, js, r, t, ts} from "../builders";
+import {dts, r, t, ts} from "../builders";
 import type {GeneratorParams} from "../generate";
 import {typeMapping} from "../queries/getTypes";
 
@@ -88,22 +88,6 @@ export const generateScalars = (params: GeneratorParams) => {
 
     // generate enum
     if (type.enum_values && type.enum_values.length) {
-      sc.writeln([
-        dts`declare `,
-        t`enum `,
-        js`const `,
-        ...frag`${ref}λEnum `,
-        js`= `,
-        `{`,
-      ]);
-      sc.indented(() => {
-        for (const val of type.enum_values!) {
-          sc.writeln([toIdent(val), t` = `, js`: `, quote(val), `,`]);
-        }
-      });
-      sc.writeln([`}`]);
-      sc.addExport(frag`${ref}λEnum`);
-
       sc.writeln([
         t`export `,
         dts`declare `,
@@ -112,7 +96,9 @@ export const generateScalars = (params: GeneratorParams) => {
           val => t`  ${toIdent(val)}: $.$expr_Literal<${ref}>;\n`
         ),
         t`} & `,
-        t`$.EnumType<${quote(type.name)}, \`\${${ref}λEnum}\`>;`,
+        t`$.EnumType<${quote(type.name)}, [${type.enum_values
+          .map(val => quote(val))
+          .join(", ")}]>;`,
       ]);
       sc.writeln([
         dts`declare `,
diff --git a/src/reflection/typesystem.ts b/src/reflection/typesystem.ts
index cbf795b93..754bc1f08 100644
--- a/src/reflection/typesystem.ts
+++ b/src/reflection/typesystem.ts
@@ -182,13 +182,12 @@ export type ExpressionMethods<Set extends TypeSet> = {
 //////////////////
 export interface EnumType<
   Name extends string = string,
-  TsType extends any = any
+  Values extends [string, ...string[]] = [string, ...string[]]
 > extends BaseType {
   __kind__: TypeKind.enum;
-  __tstype__: TsType;
+  __tstype__: Values[number];
   __name__: Name;
-  __values__: string[];
-  // (val: TsType | Vals): $expr_Literal<this>;
+  __values__: Values;
 }
 
 //////////////////
@@ -663,13 +662,13 @@ export type BaseTypeToTsType<Type extends BaseType> = Type extends ScalarType
   : Type extends EnumType
   ? Type["__tstype__"]
   : Type extends ArrayType<any>
-  ? ArrayTypeToTsType<Type>
+  ? typeutil.flatten<ArrayTypeToTsType<Type>>
   : Type extends RangeType
   ? Range<Type["__element__"]["__tsconsttype__"]>
   : Type extends TupleType
   ? TupleItemsToTsType<Type["__items__"]>
   : Type extends NamedTupleType
-  ? NamedTupleTypeToTsType<Type>
+  ? typeutil.flatten<NamedTupleTypeToTsType<Type>>
   : Type extends ObjectType
   ? typeutil.flatten<
       computeObjectShape<Type["__pointers__"], Type["__shape__"]>